[Discuss-gnuradio] gr_modtool enable

Gurus, We have "gr_modtool disable ABC" to disable the ABC custom block. But how to enable it back? (There is no "gr_modtool enable" or equivalent). ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss

Re: [Discuss-gnuradio] Time delaying a signal

I am also using the delay block in the way u have mentioned but the signal in scope doesn't act accordingly ,it remains in phase with the original... On Mon, May 12, 2014 at 11:27 PM, Mike Jameson wrote: > To shift just the phase you can use the 'Complex To Float' block in GRC > which separate

Re: [Discuss-gnuradio] Time delaying a signal

To shift just the phase you can use the 'Complex To Float' block in GRC which separates the stream into real and imaginary components. After adding the delay block in line with the imaginary component you can then recombine the stream by using the 'Float To Complex' block. Mike -- Mike Jameson M

Re: [Discuss-gnuradio] Time delaying a signal

On 05/12/2014 02:19 PM, Marcus Müller wrote: Well, not that I'm aware of. However, FFT, multiplication with a signal source, IFFT is not really hard to do, and it's what a time shift mathematically is. Greetings, Marcus Also, a phase-shift is just a complex multiply by: complex(cos(ang),sin(

Re: [Discuss-gnuradio] Time delaying a signal

Well, not that I'm aware of. However, FFT, multiplication with a signal source, IFFT is not really hard to do, and it's what a time shift mathematically is. Greetings, Marcus On Mon, May 12, 2014 at 8:14 PM, asad umer wrote: > On 5/12/14, Marcus D. Leech wrote: > > On 05/12/2014 02:02 PM, asa

Re: [Discuss-gnuradio] Time delaying a signal

On 05/12/2014 02:14 PM, asad umer wrote: so there is no exclusive block for this purpose in GRC?? A delay in samples is a delay in time: 1 sample == 1/sample-rate seconds of delay -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _

Re: [Discuss-gnuradio] Time delaying a signal

The delay block works in samples so to get seconds you have to multiply the sample rate by the number of seconds you want to be delayed by. Mike On Mon, May 12, 2014 at 7:14 PM, asad umer wrote: > On 5/12/14, Marcus D. Leech wrote: > > On 05/12/2014 02:02 PM, asad umer wrote: > >> I want to in

Re: [Discuss-gnuradio] Time delaying a signal

On 5/12/14, Marcus D. Leech wrote: > On 05/12/2014 02:02 PM, asad umer wrote: >> I want to introduce a time delay in a signal received through USRP...I >> have used the 'Delay' block but it is not showing any delay...what is >> the appropriate block to use?? >> Can i delay the phase instead? Are t

Re: [Discuss-gnuradio] Time delaying a signal

On 05/12/2014 02:02 PM, asad umer wrote: I want to introduce a time delay in a signal received through USRP...I have used the 'Delay' block but it is not showing any delay...what is the appropriate block to use?? Can i delay the phase instead? Are time and phase delay equal?

[Discuss-gnuradio] Time delaying a signal

I want to introduce a time delay in a signal received through USRP...I have used the 'Delay' block but it is not showing any delay...what is the appropriate block to use?? Can i delay the phase instead? Are time and phase delay equal? ___ Discuss-gnuradi

Re: [Discuss-gnuradio] Merge multiple complex streams

If you make an FFT block for each rtl-sdr source you can then interleave them all together and take your pick using the 'M in N' block. At the edges of each rtl-sdr frequency it will probably get quite messy as the clocks are not synchronised. An example of the use of the FFT and 'M in N' blocks i

[Discuss-gnuradio] Merge multiple complex streams

Playing around with GRC for a few months now, sorry if this question is from a dummy. I've a bunch of rtl dongles laying around, and wonder if it's possible to combine more then one to a single baseband signal. The goal is to create a super cheap full HF band web reciever like or for ' websdr' I

Re: [Discuss-gnuradio] CGRAN down, working on it

George, site still down? Do you need any help from us to recover? Greetings Something must have been upgraded on the machine, and a significant number of the dependencies needed to run Trac have disappeared. For example, python has disappeared from the machine :P This might take a while, sorr

Re: [Discuss-gnuradio] Make Errors with Out of Tree Block

Share pointer abbreviation: S-P-T-R not S-P-R-T. Thanks for the pointer about typos Martin. On Sat, May 10, 2014 at 8:49 AM, Martin Braun wrote: > On 05/10/2014 12:34 AM, Jonathan Fox wrote: > > I have an energy detector block and I am trying to gr_message with it: > > > > void energy_detec

Re: [Discuss-gnuradio] Equalization class help

Thanks for your reply Tom. Could I have some more explanation on it? if a training sequence at start of each burst could help in fast convergence for burst modem? -- Bob On Mon, May 12, 2014 at 6:01 AM, Tom Rondeau wrote: > On Mon, May 12, 2014 at 5:59 AM, bob wole wrote: > >> I want to wor

Re: [Discuss-gnuradio] How to set multiple tabs in GRC

Thank you On Sat, May 10, 2014 at 2:48 PM, Touseef Ali wrote: > Use WX Notebook block! > > Regards > Touseef > > > On May 10, 2014, at 2:24 PM, asad umer wrote: > > > > > > I want to ask that how to set multiple tabs in GRC for > FFT,waterfall,scope sink plots etc when a GRC flow graph is execu

Re: [Discuss-gnuradio] Equalization class help

On Mon, May 12, 2014 at 5:59 AM, bob wole wrote: > I want to work on equalization for ISI removal due to multipaths for burst > frequency shift keying system. I found equalizer class in gnruadio, I want > to know if somebody used cma_equalizer for the task with success or if I > can use it for eq

Re: [Discuss-gnuradio] Simple grc GUI question...

Works great, without problems, as expected :) Ralph. > -Original Message- > From: discuss-gnuradio-bounces+ralph=schmid@gnu.org > [mailto:discuss-gnuradio-bounces+ralph=schmid@gnu.org] On Behalf Of > Ron Economos > Sent: Monday, 12 May, 2014 08:14 > To: discuss-gnuradio@gnu.org

Re: [Discuss-gnuradio] error while building 3.7.3 on RHEL6

I finally disabled doxygen and everything was built fine, but the test fails at pfb_arb_resampler: FAIL: test_ccf_001 (__main__.test_pfb_arb_resampler) -- Traceback (most recent call last): File "/home/savi_ne/tools/gnuradio-3.7

[Discuss-gnuradio] Equalization class help

I want to work on equalization for ISI removal due to multipaths for burst frequency shift keying system. I found equalizer class in gnruadio, I want to know if somebody used cma_equalizer for the task with success or if I can use it for equalization of burst frequency shift keying system before co

Re: [Discuss-gnuradio] broken gnuplot

If somebody have the same problem, just install pyopengl from source. On Thu, May 8, 2014 at 6:11 PM, Nemanja Savic wrote: > Hi all again, > > actually yes, the problem was due to numpy. Namely, I uninstalled 1.4.1 > which I have on my RHEL6 and installed 1.5 or something. During that opengl >

Re: [Discuss-gnuradio] adding channel effects to an input in GNURADIO

On 12.05.2014 10:28, Nasi wrote: Channel models there do not use any filtering. Isnt it like this? I did not see any filtering in source files of channels. Filter == convolution == multipath channels. See channel_model_impl.cc. Cheers, M Sent from Mail.Ru app for iOS

Re: [Discuss-gnuradio] adding channel effects to an input in GNURADIO

Channel models there do not use any filtering. Isnt it like this? I did not see any filtering in source files of channels. Sent from Mail.Ru app for iOS Montag, 12. Mai 2014 09:53 +0200 from Martin Braun : On 11.05.2014 23:41, Nasi wrote: > (Ubuntu 13.04, GNURADIO 3.7) > > I have a question r

[Discuss-gnuradio] Non-english GNU Radio mailing lists and resources?

Hi, a quick survey: Does anyone know of/use/maintain non-English mailing lists or resources for GNU Radio? And yes, I realize the irony of asking for this on the English mailing list :) Martin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gn

Re: [Discuss-gnuradio] adding channel effects to an input in GNURADIO

On 11.05.2014 23:41, Nasi wrote: (Ubuntu 13.04, GNURADIO 3.7) I have a question regarding the channel models. As far I know the channel function must be convolved (convolution) with the input to get the output like this: out = conv(in,channel) In GNURADIO I can not find this convolution or any

Re: [Discuss-gnuradio] EAS/SAME Decoding?

On 12.05.2014 02:36, Jordan Johnson wrote: How would one create a SAME decoder in GNURadio? EAS being the Emergency Alert System, AMBER alerts, etc. I can tune to Weather radio; but I was wondering if I could listen to the EAS channels themselves. EAS: http://en.wikipedia.org/wiki/Emergency_Aler